The Cooks River is a tributary of Botany Bay in the south-east of Sydney. A new book traces the rivers history, by its environmental history. It's been called Australia's most polluted and altered river. While nineteenth century developers called the alterations as improvement, the sugar mill, ...

One of Africa's most endangered mammals, the Grevys zebra is a peculiar type of zebra. While its bigger and more regal than the mountain zebra or the plains zebra, its stripes are unique to each zebra. Just like human beings have unique fingerprints, each Grevys zebra has a different stipe pattern. ...